Genome Integrity: A new open access journal

The full and final version of this article can be found at the link belowThis article has been made available through the Brunel Open Access Publishing Fund.This article is available through the Brunel Open Access Publishing Fund

On the rate of convergence in periodic homogenization of scalar first-order ordinary differential equations

In this paper, we study the rate of convergence in periodic homogenization of scalar ordinary differential equations. We provide a quantitative error estimate between the solutions of a first-order ordinary differential equation with rapidly oscillating coefficients and the limiting homogenized solution. As an application of our result, we obtain an error estimate for the solution of some particular linear transport equations

Curl-Conforming Vector Bases for Hybrid Meshes: A New Paradigm for Pyramid Elements

A simple procedure for obtaining hierarchical curlconforming pyramid bases has been obtained by shifting to a new paradigm that requires the mapping of the pyramidal cell into a cube and then directly imposing the conformity of the vector bases with those used on adjacent differently shaped cells (tetrahedra, hexahedra and triangular prisms). This summary discusses and generalizes some features of the new construction method recently published elsewhere

Professional Concerns: Reading Comprehension and Essay Writing

Glenda C. Petrini, a Social Studies teacher at Thoreau Intermediate School in Vienna, Virginia, had tried for five years to teach the inquiry method to her students before she tried using reading skills as a vehicle for the comprehension of inquiry. In her article which follows, Ms. Petrini tells how she used the knowledge which she gained of reading skills to instruct her students in ways that would significantly strengthen their essay writing. Ms. Petrini presents convincing evidence that the teaching of reading and the teaching of writing can be combined very effectively

A scan for new N=1 vacua on twisted tori

We perform a systematic search for N=1 Minkowski vacua of type II string theories on compact six-dimensional parallelizable nil- and solvmanifolds (quotients of six-dimensional nilpotent and solvable groups, respectively). Some of these manifolds have appeared in the construction of string backgrounds and are typically called twisted tori. We look for vacua directly in ten dimensions, using the a reformulation of the supersymmetry condition in the framework of generalized complex geometry. Certain algebraic criteria to establish compactness of the manifolds involved are also needed. Although the conditions for preserved N=1 supersymmetry fit nicely in the framework of generalized complex geometry, they are notoriously hard to solve when coupled to the Bianchi identities. We find solutions in a large-volume, constant-dilaton limit. Among these, we identify those that are T-dual to backgrounds of IIB on a conformal T^6 with self-dual three-form flux, and hence conceptually not new. For all backgrounds of this type fully localized solutions can be obtained. The other new solutions need multiple intersecting sources (either orientifold planes or combinations of O-planes and D-branes) to satisfy the Bianchi identities; the full list of such new solution is given. These are so far only smeared solutions, and their localization is yet unknown. Although valid in a large-volume limit, they are the first examples of Minkowski vacua in supergravity which are not connected by any duality to a Calabi-Yau. Finally, we discuss a class of flat solvmanifolds that may lead to AdS_4 vacua of type IIA strings

Estratégias de manejo para maximizar o rendimento potencial do arroz irrigado no Rio Grande do Sul.

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